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23
TROUBLE PROBABLE CAUSE REMEDY
Excessive belt wear
Oil in the discharge
air
1. Pulley out of alignment
2. Belt too loose or too tight
3. Belt slipping
4. Pulley wobbles
1. Worn piston rings
2. Compressor air intake
restricted
3. Restricted breather
4. Excessive oil in compres-
sor
5. Wrong oil viscosity
6. Connecting rod out of
alignment
1. Realign motor pulley with
compressor pulley
2. Adjust tension (See Drive
Belt Section)
3. Adjust tension or replace
belt (See Drive Belt
Section)
4. Check for worn crankshaft,
keyway or pulley bore
resulting from running the
compressor or motor with
loose pulleys. Check for
bent pulleys or bent crank-
shaft
1. Replace with new rings
2. Clean filter. Check for other
restrictions in the intake
system
3. Clean and check breather
for free operation
4. Drain down to full level
5. Use SAE 30 (ISO 100)
non-detergent compressor
oil, Mobil 1 5W30 or Mobil
1 10W30 (See page 14).
6. Replace rod